﻿// MIT License (MIT)
// 
// Copyright (c) 2014 K Ercan Turkarslan
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
// 

#if USE_USERDATA
using System;
using System.Xml;
using System.Xml.Linq;

namespace Mios
{
    public class UserData
    {
        public MiosEngine Engine { get; private set; }

        private Boolean _isUserdata;

        private XDocument _mData;

        public String LoadTime
        {
            get
            {
                if ((_mData == null) || (_mData.Root == null))
                    return null;

                return _mData.Root.Attribute("LoadTime").Value;
            }
        }

        public String DataVersion
        {
            get
            {
                if ((_mData == null) || (_mData.Root == null))
                    return null;

                return _mData.Root.Attribute("UserData_DataVersion").Value;
            }
        }

        public void Poll()
        {
            lock (this)
            {
                if (_isUserdata)
                {
                    _mData = XDocument.Parse(Engine.Luup_Status(outputFormat: "xml", timeout: "60", minimumDelay: "2000"));
                    _isUserdata = false;
                }
                else
                {
                    _mData = XDocument.Parse(Engine.Luup_Status("xml", LoadTime, DataVersion, "60", "2000"));
                }
                Engine.UpdateValuesFromStatus(_mData);
            }
        }

        #region Constructor(s)
        public UserData(MiosEngine engine)
        {
            _isUserdata = true;
            Engine = engine;

            var httpString = Engine.Luup_UserData("xml");

            if (String.IsNullOrEmpty(httpString))
            {
                throw new InvalidOperationException("Received empty/null string while expecting an UserData Xml!");
            }

            try
            {
                _mData = XDocument.Parse(httpString);
            }
            catch (XmlException xmlException)
            {
                throw new InvalidOperationException("Could not parse UserData Xml!", xmlException);
            }

            Engine.PopulateWithUserData(_mData);
        }
        #endregion
    }
}

#endif